[rabbitmq-discuss] RabbitMQ: Simple Test Program has Possible Network Issues

[Simon MacMullen]

This really does sound like a firewall issue to me - remember that there 
may be other firewalls than the ones installed on the machines A and B.

On computer A, what does "telnet <computer B> 5672" look like?

Cheers, Simon

On 11/06/12 13:21, HFDeveloper wrote:
>
> I have a simple RabbitMQ test program that sends and then receives a message
> to a RabbitMQ server. I have two computers and I've found that whether or
> not my code works depends on which computer hosts the RabbitMQ server. Here
> is my situation (excuse my MS Paint):
>
> http://old.nabble.com/file/p33992826/ServerConfig.png
>
> 1) If computer A hosts the server and runs the code, sending a message from
> A to A, it works.
> 2) If computer A hosts the server and my code runs on computer B, sending a
> message from B to A, it works.
> 3) If computer B hosts the server and my code runs on computer A, sending a
> message from A to B, I get an exception that says "None of the specified
> endpoints were reachable".
> 4) If computer B hosts the server and runs the code, sending a message from
> B to B, it works.
> I can't figure out why scenario #3 doesn't work for me.
>
> * I don't think it's the code because three of my scenarios work exactly as
> I expect them to.
> * I don't think it's a firewall issue because I ran these tests with my
> firewalls turned off on both computers.
> * I don't think it's a problem with the RabbitMQ server on computer B
> because it is able to communicate with itself just fine (scenario #4).
> * I checked the RabbitMQ log files on computer B after trying scenario #3,
> but I don't see anything that says something about an attempted connection.
> I think computer A is simply unable to see computer B when sending requests.
>
> My question, very generally is, what are some things that I should be
> looking for that might point to my problem? There must be some setting that
> is checked on computer A but is not checked on computer B. Computer B has
> the default installation of Erlang and RabbitMQ. I'm pretty sure computer A
> is also set to the defaults (I didn't install it as recently).
>
> Please help.


-- 
Simon MacMullen
RabbitMQ, VMware